Curated OER
Chors, Secants, Tangents
Pupils identify the relationship between chords, secants and circles. In this geometry instructional activity, students calculate the length of the chords. They sketch the secant lines on a circle.
Oswego City School District
Regents Exam Prep Center: Circles, Segments, and Area
A wealth of resources to supplement instruction on parts of the circle. Find lessons describing chords, tangents, secants, and segments, as well as related practice quizzes and classroom activities.